Windows 10: Windows update failed (KB4506991 & KB4512508)

My computer tries to install and update these files:
KB4506991 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 1903
KB4512508 (OS-build 18362.295)

Ï have tried pretty much everything of troubleshooiting I have read online. I have tried to download and install the files manually from https://www.catalog.update.microsoft.com/home.aspx.

But yet I get update failed, all the time. When my computer tries to install the new updates, when it restarts it somehow stops at 7%, and then I get told that the update failed. It seems that it wont go past 7%, hence why the download might be failing.

Any help on this please? I am really frustrated since this is a brand new computer.. *Banghead

:)

 

Canceling an Update - KB4506991

I have tried to permit the update of Windows 10 PRO on my wife's Dell XPS13 twice and each time start up files were corrupted requiring the complete re-installation of Windows - a very long and painful process! The 1093 update installed fine but then KB4506991
comes along as, with 1093 they want the Net.Framework to update. It is KB4506991 causing the problem. For the 3rd time I now have the computer up and running and all programs re-installed. I don't dare let KB4506991 install again. I know I can delay all
updates but I desire the update process continue - just don't want KB4506991 to crash my computer again! Any suggestions? I know it has been a HUGE complaint of Windows 10 users that we cannot control individual updates - wish Microsoft would listen!

Brian LaFontaine

 

Windows Updates failed to instal

I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

Thanks mate

 

Windows Updates failed to instal

I'm not sure how differant XP media center Edition is but you could clear the history \ cache if these folders are there.

Step 1 Register DLL files.

=================

By trying this step, we can check if the update engines are working properly.



1. Close all instances of Internet Explorer.

2. Click Start and Run, type "Regsvr32 atl.dll" (without quotes) in the Open box and click OK.



Note: There is a space between regsvr32 and atl.dll



3. Similarly, one by one, register the files listed below:



Regsvr32 msxml3.dll

Regsvr32 wuapi.dll

Regsvr32 wuaueng.dll

Regsvr32 wuaueng1.dll

Regsvr32 wups2.dll

Regsvr32 wucltui.dll

Regsvr32 wups.dll

Regsvr32 wuweb.dll

Regsvr32 qmgr.dll

Regsvr32 qmgrprxy.dll

Regsvr32 jscript.dll



Note: If you encounter errors while registering any of these files then skip that file and continue with the next one.



If the issue persists, let's move on to the steps below to verify Windows Update services and temporary folders.



Step 2 Verify the relevant Windows Update services.

=========================================

1. Click Start->Run, type "services.msc" (without quotation marks) in the open box and click OK.

2. Double click the service "Automatic Updates".

3. Click on the Log On tab, please ensure the option "Local System account" is selected and the option "Allow service to interact with desktop" is unchecked.

4. Check if this service has been enabled on the listed Hardware Profile. If not, please click the Enable button to enable it.

5. Click on the tab "General "; make sure the "Startup Type" is "Automatic" or "Manual". Then please click the button "Stop" under "Service Status" to stop the service.

6. Then please click the button "Start" under "Service Status" to start the service.

7. Please repeat the above steps with the other services:



Background Intelligent Transfer Service

Event Log

Remote Procedure Call (RPC)



Note: Event log service is enabled on all of the hardware profiles; this service does not have an option to enable or disable on certain hardware profile.



If it still does not help, let's proceed to step 3.



Step 3 Reload the Update temporary folders.

===================================

One possible cause is that the temporary folder for Windows Update is containing corrupted files. Let's erase all the files there to get the system clean.



1. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



Net stop WuAuServ



2. Click Start, Run, type: %windir% and press Enter.

3. In the opened folder, rename the folder SoftwareDistribution to Sdold.

4. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



Net start WuAuServ



Please test the Windows Update website and let me know the result. If the issue persists, to clarify the issue and provide more accurate troubleshooting steps, please assist me in collecting the following information.